Senju Cells + Sage Mode and stuff.
Also, Mangastream seems to have a better explanation in their translations of what happened.
http://readms.com/r/naruto/674/2349/1If you want a shorter explanation of what's been happening:
Sasuke somehow dodges Madara's Yin Release technique without moving. But Madara deducts that it's something greater/worse. Most-likely an Infinite Izanagi being used with Sasuke's fancy new Rinnegan. It's also revealed that Limbo is an invisible world where he can spawn a clone/shadow of himself in to attack/defend without notice. Sasuke can see it with his Rinnegan, Naruto can't see it but can sense it somewhat.
Also, Shukaku can apparently grant Magnet Release. +1 for whoever has it, as Shukaku has some usefulness now.